How to Maintain a Saltwater Hot Tub

Saltwater hot tubs use salt to generate chlorine, providing a gentler soaking experience. However, maintaining water chemistry, equipment, and cleanliness is still crucial to ensure longevity and safe use.

Benefits of Proper Maintenance

• Longer equipment lifespan

• Cleaner, safer water

• Reduced risk of corrosion or scaling

• Lower overall repair costs

Tools and Supplies You Will Need

Before starting your maintenance routine, gather these supplies to make the process smooth and effective.

Basic Supplies

• Salt test strips

• pH, alkalinity, and chlorine test kit

• Spa salt (specifically for hot tubs)

• Non-abrasive sponge or cloth

• Filter cleaner

Optional Extras

• Soft brush for hard-to-reach spots

• Microfiber towels for drying

• Protective gloves

Step-by-Step Guide to Maintaining Your Saltwater Hot Tub

Follow these steps to keep your hot tub water clear and equipment in good condition.

Step 1: Test the Water Weekly

• Use test strips or a kit to check salt level, pH, alkalinity, and chlorine.

• Ideal salt level is usually between 1,500 and 3,000 ppm (check your manual).

• pH should be between 7.2 and 7.8, and alkalinity between 80 and 120 ppm.

Step 2: Adjust Water Chemistry

• Add spa salt if the salt level is too low.

• Use pH increaser or decreaser to balance pH.

• Adjust alkalinity with baking soda or alkalinity increaser.

• If chlorine is too high or low, adjust settings on the saltwater generator.

Step 3: Clean the Filter Monthly

• Turn off the hot tub and remove the filter.

• Rinse thoroughly with a garden hose.

• Use a filter cleaner for a deeper clean, then rinse again and let dry before reinstalling.

Step 4: Wipe Down the Shell

• Use a damp sponge or cloth to clean the interior shell weekly.

• Pay attention to waterline marks where oils and debris accumulate.

• Avoid abrasive cleaners that could scratch the surface.

Step 5: Inspect the Salt Cell

• Every few months, inspect the salt cell for buildup or scaling.

• Clean it if necessary according to the manufacturer’s instructions.

Advanced Tips to Extend Hot Tub Life

Circulation and Heating

• Run the jets daily to keep water moving and evenly heated.

• Keep the cover on when not in use to retain heat and prevent debris.

Water Changes

• Drain and refill the hot tub every 3–4 months, or more often if water becomes cloudy or difficult to balance.

• Always clean the shell and rinse the filter during water changes.

Common Mistakes to Avoid

• Adding table salt instead of spa-grade salt

• Ignoring water chemistry because the system generates chlorine

• Letting the filter become clogged, which strains the pump

• Forgetting to inspect and clean the salt cell

Safety Tips While Maintaining

• Turn off power before removing the filter or salt cell.

• Wear gloves when handling chemicals or cleaning agents.

• Keep children and pets away during maintenance.

Helpful Notes

• Record your water test results and maintenance dates to track performance.

• If unsure about any adjustment, consult your owner’s manual or a professional.

• Regular maintenance saves money and ensures a safe soaking experience.

By following these clear steps, you can enjoy your saltwater hot tub for years, with clean water and worry-free relaxation.